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Electronics and Communication Engineering (ECE) Exam  >  Electronics and Communication Engineering (ECE) Tests  >  GATE ECE (Electronics) Mock Test Series 2025  >  Test: Microprocessors - 1 - Electronics and Communication Engineering (ECE) MCQ

Test: Microprocessors - 1 - Electronics and Communication Engineering (ECE) MCQ


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15 Questions MCQ Test GATE ECE (Electronics) Mock Test Series 2025 - Test: Microprocessors - 1

Test: Microprocessors - 1 for Electronics and Communication Engineering (ECE) 2024 is part of GATE ECE (Electronics) Mock Test Series 2025 preparation. The Test: Microprocessors - 1 questions and answers have been prepared according to the Electronics and Communication Engineering (ECE) exam syllabus.The Test: Microprocessors - 1 MCQs are made for Electronics and Communication Engineering (ECE) 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Microprocessors - 1 below.
Solutions of Test: Microprocessors - 1 questions in English are available as part of our GATE ECE (Electronics) Mock Test Series 2025 for Electronics and Communication Engineering (ECE) & Test: Microprocessors - 1 solutions in Hindi for GATE ECE (Electronics) Mock Test Series 2025 course. Download more important topics, notes, lectures and mock test series for Electronics and Communication Engineering (ECE) Exam by signing up for free. Attempt Test: Microprocessors - 1 | 15 questions in 45 minutes | Mock test for Electronics and Communication Engineering (ECE) preparation | Free important questions MCQ to study GATE ECE (Electronics) Mock Test Series 2025 for Electronics and Communication Engineering (ECE) Exam | Download free PDF with solutions
Test: Microprocessors - 1 - Question 1
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Address bus and data bus in 8085 μp respectively are

Detailed Solution for Test: Microprocessors - 1 - Question 1

Address bus is unidirectional while data bus is bidirectional.

Test: Microprocessors - 1 - Question 2
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Maximum memory that we can interface to 8085 up is _______________ byte

Detailed Solution for Test: Microprocessors - 1 - Question 2

Address lines in 8085 μp = 16 lines so maximum memory which can be interfaced to 8085 μp

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Test: Microprocessors - 1 - Question 3
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Which signal is used to demultiplex lower address byte and data byte

Detailed Solution for Test: Microprocessors - 1 - Question 3

ALE (address latch enable) is used to demultiplex lower address byte and data byte.

Test: Microprocessors - 1 - Question 4
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Ready signal is used to
Detailed Solution for Test: Microprocessors - 1 - Question 4

Ready signal is used to synchronise slow peripheral with microprocessor.

Test: Microprocessors - 1 - Question 5
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What is the difference between I/O mapped I/O and memory mapped I/O.
Detailed Solution for Test: Microprocessors - 1 - Question 5

In case of I/O mapped I/O 8 bit address is used to identify I/O while in case of memory mapped I/O 16 bit address is used to identify I/O.

Test: Microprocessors - 1 - Question 6
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Frequency of operation of 8085 microprocessor is ______________    MHz
Detailed Solution for Test: Microprocessors - 1 - Question 6

Frequency of operation of 8085 microprocessor is 3 MHz.

Test: Microprocessors - 1 - Question 7
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Bit position of five flags in flag register is given. Which one of the following is correct?
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Test: Microprocessors - 1 - Question 8
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How many buses are connected as part of the 8085A microprocessor?
Test: Microprocessors - 1 - Question 9
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LDAXBThe addressing mode is
Detailed Solution for Test: Microprocessors - 1 - Question 9

The addressing mode is indirect because the address of the data is given indirectly by the content of BC pair.

Test: Microprocessors - 1 - Question 10
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In logical operations one operand is always.
Detailed Solution for Test: Microprocessors - 1 - Question 10

In logical operations one operand is always accumulator.

Test: Microprocessors - 1 - Question 11
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Which flag is affected, when instruction CMA is executed.
Detailed Solution for Test: Microprocessors - 1 - Question 11

due to execution of CMA (complement the accumulator) none of the flags are affected.

Test: Microprocessors - 1 - Question 12
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8155 is
Detailed Solution for Test: Microprocessors - 1 - Question 12

8155 is a programmable I/O ports and timer.

Test: Microprocessors - 1 - Question 13
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DAD instruction has
Detailed Solution for Test: Microprocessors - 1 - Question 13

DAD instruction only affects the carry flag when result exceeded 16 bits.

Test: Microprocessors - 1 - Question 14
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DAA is used to
Detailed Solution for Test: Microprocessors - 1 - Question 14

DAA is a one byte instructions used for changing the content of accumulator from binary value to two 4-bit binary coded decimal digits.

Test: Microprocessors - 1 - Question 15
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Assume HL pair contains 20FFH.Which instruction will transfer the program to location 20FFH?
Detailed Solution for Test: Microprocessors - 1 - Question 15

PCHL →• It implies that content of HL are copied to program counter so when 20FFH is loaded to PC, program will transfer to location 20FFH.

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